How does a property to water help organisms during the winter?

• Hydrogen bonding causes ice to float, providing an insulating layer

• Hydrogen bonding causes ice to float, providing additional oxygen

• The low mass of molecules results in high specific heat capacity providing additional oxygen

• The low mass of the molecules results in high specific heat providing and insulating layer

Pollution in the water can interfere with some species, causing them to sink. How is the surface tension of water affected by water pollution?

• Pollution decreases surface tension because it decreases cohesion

• Pollution decreases surface tension because it increases cohesion

• Pollution increases surface tension because it decreases cohesion

• Pollution increases surface tension because it increases cohesion

Water is very important to living things. What best describes the property of water that is vital to the cycling of matter through an ecosystem?

• Water is cohesive; its molecules cling to each other

• Water has high specific heat; it requires a lot of energy before changing temperature

• Water is able to dissolve many substances; allows gasses to dissolve in water

• Water expands when it is frozen; causes ice to sink and liquid water for organisms

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Redwood are some of the tallest trees in the world. Which property of water causes it to be transported up a tree like a redwood tree?

• Carbon Bonding

• Cohesive behavior

• Versatility as a solvent

• Temperature moderation

Which biomolecule is rich in carbon-hydrogen bonds and functions as a long-term energy storage?

• Carbohydrates

• Lipids

• Nucleic Acids

• Proteins

The diagram shows a chitin monomer, which major class of biological molecules does chitin belong?

• Lipids used for structural support

• Proteins used for energy storage

• Nucleic acids, used for coding and genetic information

• Carbohydrates used for structural support in cells

What is the function of a macromolecule that is composed of several of these subunits?

• Regulating metabolism

• Storing genetic information

• Providing structural support

• Controlling chemical reactions

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If a culture of a substance was deprived of amino acids, which category of macromolecules would the liver cells not be able to construct properly?

• Carbohydrates

• Lipids

• Nucleic Acids

• Proteins

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You are performing an experiment where you try to determine how a food source affects muscle development of dogs. The scientist raise dogs from puppies and then separate the dogs into different groups, each with a different type of food. Which set of data would provide the best support that a specific food is responsible for muscular development of dogs?

• The shine of the dogs coat once the dogs reaches adult size

• The volume of the bark once the dog reaches the adult size

• The distance the dog can jump once the dog reaches adult size

• The number of offspring produced once the dog reaches adult size

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You are researching what can improve the safe transportation of hydrogen that is stored in a liquid. What would be the best first step to perform?

• Research conditions hydrogen can be stored in a liquid

• Conclude which substances allow hydrogen to be stored in a liquid

• Graph data about conditions that affect the feasibility of storing hydrogen

• Test the effects different substances have on the feasibility of storing hydrogen

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